The short answer
You can use supplements as a tested athlete, and a few simple checks make choosing much easier. The key thing to know is that you're responsible for anything found in your sample, even if it came from a supplement you trusted. That's why independent batch testing matters, and why matching the certificate to your exact tub is worth the extra minute.
In this article
Whether you've just been selected for a rep team, you compete at national level, or you're simply in a sport that tests, this guide is for you. We'll cover how strict liability works, what batch testing does and doesn't tell you, and how to check a product before you take it.
Can I take supplements if I get drug tested?
Yes, but you carry the responsibility for every one. Under anti-doping rules, a banned substance in your sample counts as a violation whether you meant to take it or not. This is called strict liability. [1]
Supplements can be contaminated or labelled wrongly, including in New Zealand. "Natural" or "herbal" on the tub doesn't mean it's safe for sport. [2]
What does "drug tested" actually mean?
It depends who's saying it. It might mean the maker's own quality checks, an independent testing programme, a certificate for one batch, or nothing clearly defined.
The most useful version is independent batch testing, where samples from a specific production batch are tested for banned substances. It lowers the risk but can't remove it. Sport Integrity New Zealand doesn't approve any supplement, so be wary of a product claiming it does. [2] [3]
How do I confirm a product is batch tested?
Find the certificate yourself on the testing programme's own website, then match it to the exact tub you'll use. A new batch needs a new check, even if it's the same product.
For each tub
Batch-testing check steps
Batch testing lowers the risk but can't remove it [2] [3]. If any step fails, see What if I can't find a certificate?
Which products carry more risk?
Be extra careful with anything sold for fast fat loss, big energy, hormone effects or sexual performance, and with any proprietary blend that hides its doses. Vague ingredients make it hard to match a product to a certificate.
With pre-workouts, count your total caffeine. Don't double a serve, and don't stack one with energy drinks or caffeine tablets without adding it all up. [4] Our stimulant vs stimulant-free guide covers how to choose one.
What if I can't find a certificate?
Hold off until you've checked with your team doctor or anti-doping lead. Don't fill the gap with a certificate for a different batch or a retailer's description.
Two more rules worth sticking to. Don't start anything new in competition week. And don't buy a replacement overseas or accept samples from other athletes, because recipes can differ between countries and you can't confirm the batch.
What do I do at a drug test?
Declare everything you've taken. Keep the container, even if it's nearly empty, so the batch details are on hand. Then contact your team doctor or Sport Integrity New Zealand for advice on next steps. [2]
Which one should I buy?
Start with the products your support team agrees you need, then choose ones with an independent batch certificate you can look up and match to your tub. Fewer products means fewer batches to keep track of.
Email us at info@supplementsolutions.co.nz before you order and we'll find the batch number for you. For more on shopping safely, read our guide to buying supplements online in New Zealand.
Want a plan built around you?
Inception Nutrition builds your performance nutrition, supplements and lifestyle into one plan around your goals, your routine and the foods you like, with weekly check-ins wherever you are in NZ. Not sure where to start? Take their free metabolic audit. Not sure which product suits you? Try our Supplement Finder or email us at info@supplementsolutions.co.nz. No question is too basic.
References
4 sources
- 1.Sport Integrity Commission: Sports Anti-Doping Rules 2026, Rule 2 Anti-doping rule violations and strict liability.
- 2.Sport Integrity Commission: Supplements Contamination, labelling risk, batch testing limits and the Commission's position on supplements.
- 3.WADA: Supplements Supplement risk for athletes and support personnel.
- 4.Australian Institute of Sport: Caffeine Caffeine in sport, individual response and pre-workout products.
Sources shown: the research is linked in the references. Product details and doses come from the brand. Product suggestions show what’s available now. Last updated 22 October 2026.
This guide is general information, not a diagnosis or medical advice. Take products as directed, and check with a qualified health professional first if you're pregnant, breastfeeding, taking medication or managing a health condition.
